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Finding the Fourth Proportional to 293,630.40, 440,445.60 and 291,787.20

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Solution

The fourth proportional to 293,630.40, 440,445.60 and 291,787.20 is: 437,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,630.40 : 440,445.60 = 291,787.20 : x
  2. Step 2: Convert to fraction form
    293,630.40/440,445.60 = 291,787.20/x
  3. Step 3: Cross multiply
    293,630.40x = 440,445.60 × 291,787.20
  4. Step 4: Simplify right side
    293,630.40x = 128,516,388,376.32
  5. Step 5: Solve for x
    x = 128,516,388,376.32/293,630.40
  6. Step 6: Final answer
    x = 437,680.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.